Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
ban thanh » ban hanh, ban hang
su triet » su viet, su tien, ve triet
thanh vi » hanh vi, thanh va, thanh ve
tuc ban » thuc ban, truc ban, tu ban
vu sach » vu bach, su sach, vu khach
hieu va » lieu va, hieu qua
long ha » dong ha, cong ha, dong hoa
cao tuc » dao tuc, cao duc, cao suc
va cao » va cac, va co, va dao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach _ ((lang ha) or (long ha)) noi. hieu va cao tuc ban thanh vi ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach _ ((lang ha) OR (long ha)) noi. hieu va cao tuc ban thanh vi ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: vu sach _ ((lang ha) or (long ha)) noi. hieu va cao tuc ban thanh vi ((cua triet) or (su triet))*.